What is the name of the compound FeCI2?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water